display_read_u32_of
int ret = display_read_u32_of(dev, of_node, "width", &width);
int ret = display_read_u32_of(dev, of_node, "height", &height);
int ret = display_read_u32_of(dev, of_node, "depth", &depth);
int ret = display_read_u32_of(dev, of_node, "linebytes", &linebytes);